--- ray/src/rt/rv3.c	1991/05/21 17:41:19	1.20
+++ ray/src/rt/rv3.c	1993/08/05 13:05:01	2.5
@@ -19,10 +19,20 @@ static char SCCSid[] = "$SunId$ LBL";
 #include  "random.h"
 
 #ifndef WFLUSH
-#define WFLUSH		30		/* flush after this many rays */
+#ifdef SPEED
+#define WFLUSH		(5*SPEED)
+#else
+#define WFLUSH		100		/* flush after this many rays */
 #endif
+#endif
 
+#ifdef  SMLFLT
+#define  sscanvec(s,v)	(sscanf(s,"%f %f %f",v,v+1,v+2)==3)
+#else
+#define  sscanvec(s,v)	(sscanf(s,"%lf %lf %lf",v,v+1,v+2)==3)
+#endif
 
+
 getrect(s, r)				/* get a box */
 char  *s;
 register RECT  *r;
@@ -87,7 +97,7 @@ double  *mp;
 		error(COMMAND, "illegal magnification");
 		return(-1);
 	}
-	if (sscanf(s, "%*lf %lf %lf %lf", &vec[0], &vec[1], &vec[2]) != 3) {
+	if (!sscanvec(sskip(s), vec)) {
 		if (dev->getcur == NULL)
 			return(-1);
 		(*dev->comout)("Pick view center\n");
@@ -137,8 +147,8 @@ paint(p, xmin, ymin, xmax, ymax)	/* compute and paint 
 register PNODE  *p;
 int  xmin, ymin, xmax, ymax;
 {
-	extern long  nrays;
-	static long  lastflush = 0;
+	extern unsigned long  nrays;
+	static unsigned long  lastflush = 0;
 	static RAY  thisray;
 	double  h, v;
 
@@ -375,7 +385,6 @@ moveview(angle, elev, mag, vc)			/* move viewpoint */
 double  angle, elev, mag;
 FVECT  vc;
 {
-	extern double  sqrt(), dist2();
 	double  d;
 	FVECT  v1;
 	VIEW  nv;